阅读说明：本技术 用于加工液压阀体的夹具 (Clamp for machining hydraulic valve body ) 是由 韦晶晖 陈飞 高宝成 高凌 于 2020-06-23 设计创作，主要内容包括：本发明涉及一种用于加工液压阀体的夹具。具体说,是对液压阀体表面及其表面的孔系加工时、用来对其进行固定的定位机构。其包括底板,其特点是：底板之上至少有两层支撑板。所述支撑板的长度和宽度相等,相邻支撑板的纵向中心之间均连有立柱,立柱两侧均有夹紧单元；所述夹紧单元均由上顶机构和下压紧机构组成。本发明易操作。采用本发明来对液压阀体固定,可提高产品质量和生产效率。(The invention relates to a clamp for machining a hydraulic valve body. Specifically, the positioning mechanism is used for fixing the hydraulic valve body surface when the surface of the hydraulic valve body and the hole system on the surface are machined. It includes the bottom plate, and its characteristics are: at least two layers of supporting plates are arranged on the bottom plate. The length and the width of the supporting plates are equal, the vertical columns are connected between the longitudinal centers of the adjacent supporting plates, and the clamping units are arranged on the two sides of each vertical column; the clamping unit consists of an upper jacking mechanism and a lower pressing mechanism. The invention is easy to operate. The hydraulic valve body is fixed by adopting the invention, so that the product quality and the production efficiency can be improved.)

1. A anchor clamps for processing hydraulic valve body, including bottom plate 1, its characterized in that: at least two layers of supporting plates 2 are arranged on the bottom plate 1; the length and the width of the supporting plates 2 are equal, the vertical columns 4 are connected between the longitudinal centers of the adjacent supporting plates 2, and clamping units are arranged on two sides of each vertical column 4; the clamping unit consists of an upper jacking mechanism and a lower pressing mechanism.

2. The clamp for machining a hydraulic valve body according to claim 1, characterized in that: the jacking mechanism comprises a mounting block 17; the mounting block 17 is rectangular, the length of the mounting block is matched with the length of the supporting plate 2 below one side of the upright post 4, the width of the mounting block is the same as that of the supporting plate 2, a lower ejector pin and a V-shaped block 15 are respectively arranged at the inner end and the outer end of the mounting block, and a first supporting block 7 is arranged in the middle of the mounting block; the inner side of the V-shaped block 15 is provided with a second supporting block 16; the lower ejector pin comprises a pin column 6, a first blind hole is formed in an installation block 17 corresponding to the pin column 6, a spring 18 is arranged in the first blind hole, and the lower end of the pin column 6 extends into the first blind hole and abuts against the spring 18; when in work, the upper end of the pin 6 extends into a corresponding hole below the hydraulic valve body 5.

3. The jig for machining a hydraulic valve body according to claim 2, characterized in that: a pin sleeve 3 is arranged between the lower ejector pin and the first blind hole, and the upper end of the pin sleeve 3 extends out of the first blind hole; the heights of the pin sleeve 3, the first supporting block 7 and the second supporting block 16 are equal; in the working state, the upper end of the pin sleeve 3, the first supporting block 7 and the second supporting block 16 are all propped against the lower surface of the hydraulic valve body 5.

4. The clamp for machining a hydraulic valve body according to claim 1, characterized in that: the pressing mechanism comprises a main oil cylinder 10 and a first auxiliary oil cylinder 11; a second blind hole and a third blind hole are respectively formed below the upper supporting plate 2 corresponding to the lower ejector pin and the first supporting block 7, and cylinder bodies of the main pressure cylinder 10 and the first auxiliary pressure cylinder 11 are respectively positioned in the second blind hole and the third blind hole; the outer ends of piston rods of the main oil cylinder 10 and the first auxiliary oil cylinder 11 are respectively connected with an upper ejector head 12 and a pressing rod 13; when the hydraulic valve works, the lower ends of the pressing rod 13 and the upper ejector 12 are respectively abutted in corresponding holes on the upper surface of the hydraulic valve body 5 and the upper surface of the hydraulic valve body 5.

5. The jig for machining a hydraulic valve body according to claim 4, characterized in that: vertical guide rails 8 are connected to two sides of the upright post 4; the vertical guide rails 8 are respectively provided with a sliding block 81 capable of sliding vertically along the vertical guide rails, and the sliding blocks 81 are connected with a horizontal extension part 9; the outer end of the horizontal extension part 9 extends to the position below the main oil cylinder 10, and an upper center 14 is connected to the lower part of the outer end of the horizontal extension part 9; in operation, the upper top 12 of the lower end of the piston rod of the main oil cylinder 10 is pressed against the upper surface of the horizontal extension part 9.

6. The jig for machining a hydraulic valve body according to claim 4 or 5, characterized in that: a second auxiliary oil cylinder 111 and a third auxiliary oil cylinder 112 are respectively arranged between the main oil cylinder 10 and the first auxiliary oil cylinder 11 and outside the first auxiliary oil cylinder 11, a fourth blind hole and a fifth blind hole are respectively arranged below the supporting plate 2 above the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112, cylinder bodies of the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112 are respectively positioned in the fourth blind hole and the fifth blind hole, and piston rods of the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112 face downwards and are connected with the upper end of the compression rod 13.

Technical Field

The invention relates to a clamp. Specifically, the positioning mechanism is used for fixing the hydraulic valve body surface when the surface of the hydraulic valve body and the hole system on the surface are machined.

Background

It is known in the hydraulic valve production industry that the surface of the hydraulic valve and the hole system on the surface of the hydraulic valve must be fixed during machining so as to ensure the machining precision. At present, the method for fixing the hydraulic valve body is still realized by adopting a lever oil cylinder to tightly press a hydraulic valve body blank on a workbench. Although the hydraulic valve body blank can be fixed by adopting the lever oil cylinder, the pressing force of each lever oil cylinder is very uneven because the hydraulic valve body is a cast blank and the surface of the hydraulic valve body is rough, the hydraulic valve body to be processed is difficult to avoid loosening in the processing process, the processing precision is difficult to ensure, and the quality of the produced hydraulic valve body is not high. And because the lever oil cylinders are all arranged around the processed hydraulic valve body, interference can be caused to a processing cutter during processing, so that the pressing position of the lever oil cylinder needs to be adjusted for many times during the processing process, the production efficiency is low, and the operation is troublesome.

Disclosure of Invention

The invention aims to provide a clamp for machining a hydraulic valve body. The invention is easy to operate. The hydraulic valve body is fixed by adopting the invention, so that the product quality and the production efficiency can be improved.

The above problems to be solved by the present invention are realized by the following technical solutions:

the invention discloses a clamp for processing a hydraulic valve body, which comprises a bottom plate and is characterized in that: at least two layers of supporting plates are arranged on the bottom plate. The length and the width of the supporting plates are equal, the vertical columns are connected between the longitudinal centers of the adjacent supporting plates, and the clamping units are arranged on the two sides of each vertical column; the clamping unit consists of an upper jacking mechanism and a lower pressing mechanism.

Wherein:

the jacking mechanism comprises a mounting block. The mounting block is rectangular, the length of the mounting block is matched with that of the supporting plate below one side of the upright column, the width of the mounting block is the same as that of the supporting plate, a lower ejector pin and a profile block are arranged at the inner end and the outer end of the mounting block respectively, and a first supporting block is arranged in the middle of the mounting block. The inner side of the V-shaped block is provided with a second supporting block. The lower ejector pin comprises a pin column, a first blind hole is formed in the mounting block corresponding to the pin column, a spring is arranged in the first blind hole, and the lower end of the pin column extends into the first blind hole and abuts against the spring. When the hydraulic valve works, the upper end of the pin column extends into a corresponding hole below the hydraulic valve body.

A pin bush is arranged between the lower ejector pin and the first blind hole, and the upper end of the pin bush extends out of the first blind hole; the heights of the pin bush, the first supporting block and the second supporting block are equal. Under the working state, the upper end of the pin bush, the first supporting block and the second supporting block are all propped against the lower surface of the hydraulic valve body.

The pressing mechanism comprises a main oil pressing cylinder and a first auxiliary oil pressing cylinder. And a second blind hole and a third blind hole are respectively formed below the supporting plate above the lower ejector pin and the first supporting block, and the cylinder bodies of the main pressure cylinder and the first auxiliary pressure cylinder are respectively positioned in the second blind hole and the third blind hole. The outer ends of the piston rods of the main oil pressing cylinder and the first auxiliary oil pressing cylinder are respectively connected with an upper ejector head and a pressing rod. When the hydraulic valve works, the lower ends of the pressing rod and the upper ejector head respectively push against the upper surface of the hydraulic valve body and corresponding holes on the upper surface of the hydraulic valve body.

Both sides of the upright post are connected with vertical guide rails. The vertical guide rails are provided with sliding blocks capable of sliding vertically along the vertical guide rails, and the sliding blocks are connected with horizontal extension parts. The outer end of the horizontal extension part extends to the position below the main oil cylinder, and an upper tip is connected to the lower portion of the outer end of the horizontal extension part. When the hydraulic cylinder works, the upper top head at the lower end of the piston rod of the main oil cylinder is propped on the horizontal extension part.

A second auxiliary oil cylinder and a third auxiliary oil cylinder are arranged between the main oil cylinder and the first auxiliary oil cylinder and outside the first auxiliary oil cylinder respectively, a fourth blind hole and a fifth blind hole are formed below the supporting plates above the second auxiliary oil cylinder and the third auxiliary oil cylinder respectively, the cylinder bodies of the second auxiliary oil cylinder and the third auxiliary oil cylinder are located in the fourth blind hole and the fifth blind hole respectively, and piston rods of the second auxiliary oil cylinder and the third auxiliary oil cylinder are downward and are connected with the upper end of the compression rod.

According to the scheme, at least two layers of supporting plates are arranged on the bottom plate. The length and the width of backup pad equal, all link between the vertical center of adjacent backup pad has the stand, and the stand both sides all have the clamping unit. The clamping unit consists of an upper jacking mechanism and a lower pressing mechanism. When the hydraulic valve clamping device works, as long as a processed hydraulic valve body is placed on the upper jacking mechanism, the main oil cylinder and the first to third auxiliary oil cylinders are started, piston rods of the main oil cylinder and the first to third auxiliary oil cylinders extend outwards, the hydraulic valve body can be clamped between the upper jacking mechanism and the lower pressing mechanism, and therefore clamping and fixing of the hydraulic valve body are achieved. Compared with the prior art in which the lever oil cylinder is adopted for fixing, the operation is easy, and the production efficiency and the product quality can be greatly improved.

Drawings

FIG. 1 is a schematic view of a fixture for machining a hydraulic valve body of the present invention;

fig. 2 is an enlarged view of point I of fig. 1.

Detailed Description

As shown in fig. 1 and 2, the fixture for processing a hydraulic valve body of the present invention comprises a base plate 1, three layers of support plates 2 are disposed on the base plate 1, the support plates 2 have the same length and width, and the support plate 2 at the lowest layer is connected to the base plate. Between the center of first floor backup pad 2 and second floor backup pad 2 and between the center of second floor backup pad 2 and third floor backup pad all link there is stand 4, all is provided with a clamping unit in two stand 4 both sides, four clamping units altogether. The clamping unit consists of an upper jacking mechanism and a lower pressing mechanism.

The mechanism comprises a mounting block 17. The mounting block 17 is rectangular, the length of the mounting block is matched with that of the lower support plate 2 on one side of the upright column 4, the width of the mounting block is the same as that of the support plate 2, a lower ejector pin and a V-shaped block 15 are respectively arranged on the upper surfaces of the inner end and the outer end of the mounting block, and a first support block 7 is arranged in the middle of the mounting block. A second supporting block 16 is arranged inside the V-shaped block 15. The lower ejector pin comprises a pin column 6, a first blind hole is processed on a mounting block 17 corresponding to the pin column 6, and a spring 18 is mounted in the first blind hole. The lower end of the pin 6 extends into the first blind hole and is pressed against the upper end of the spring 18. To increase the depth of the blind hole, the blind hole extends down onto the lower support plate 2. When the hydraulic valve works, the upper end of the pin 6 extends into a hole below the hydraulic valve body 5.

Wherein, install pin bush 3 between lower knock pin and the first blind hole, the upper end of pin bush 3 stretches out above first blind hole. The heights of the pin bush 3, the first supporting block 7 and the second supporting block 16 are equal, the upper end of the pin bush 3, the first supporting block 7 and the second supporting block 16 are all propped against the lower surface of the hydraulic valve body 5 in a working state, and the outer side of the lower part of the hydraulic valve body 5 is arranged in the V-shaped block 15.

The pressing mechanism comprises a main oil cylinder 10 and a first auxiliary oil cylinder 11. And a second blind hole and a third blind hole are respectively processed below the upper supporting plate 2 corresponding to the lower ejector pin and the first supporting block 7, and the cylinder bodies of the main pressure cylinder 10 and the first auxiliary pressure cylinder 11 are respectively fixed in the second blind hole and the third blind hole. The outer ends of the piston rods of the main oil cylinder 10 and the first auxiliary oil cylinder 11 are respectively connected with an upper ejector head 12 and a pressing rod 13. When in work, the lower ends of the pressing rod 13 and the upper ejector 12 respectively push against the upper surface of the hydraulic valve body 5 and corresponding holes on the upper surface of the hydraulic valve body 5.

Wherein, the both sides of stand 4 all are provided with vertical guide rail 8, and this vertical guide rail is fixed on the stand one side of clamping unit at place with the help of the bolt. The vertical guide rails 8 are rod-shaped guide rails, and sliding blocks 81 capable of vertically sliding along the vertical guide rails are mounted on the vertical guide rails. The slider 81 is connected to a horizontal extension 9. The horizontal extension part 9 is a long strip plate, the outer end of the horizontal extension part extends to the lower part of the main oil cylinder 10, and an upper tip 14 is connected to the lower part of the outer end of the horizontal extension part 9. In operation, the upper top 12 of the lower end of the piston rod of the main oil cylinder 10 is pressed against the horizontal extension part 9.

In order to improve the compression effect, a second auxiliary oil cylinder 111 and a third auxiliary oil cylinder 112 are respectively arranged between the main oil cylinder 10 and the first auxiliary oil cylinder 11 and outside the first auxiliary oil cylinder 11, a fourth blind hole and a fifth blind hole are respectively processed below the supporting plate 2 above the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112, cylinder bodies of the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112 are respectively fixed in the fourth blind hole and the fifth blind hole, and piston rods of the second auxiliary oil cylinder 111 and the third auxiliary oil cylinder 112 face downwards and are connected with the upper end of the compression rod 13.

When the hydraulic valve body clamping device works, as long as a processed hydraulic valve body is placed on the upper jacking mechanism, the main oil cylinder 10 and the first to third auxiliary oil cylinders are started, piston rods of the main oil cylinder 10 and the first to third auxiliary oil cylinders extend outwards, the hydraulic valve body 5 can be clamped between the upper jacking mechanism and the lower pressing mechanism, and clamping and fixing of the hydraulic valve body 5 are achieved.